121752404717 has 16 divisors (see below), whose sum is σ = 123795313200. Its totient is φ = 119728315392.

The previous prime is 121752404701. The next prime is 121752404773. The reversal of 121752404717 is 717404257121.

It can be written as a sum of positive squares in 8 ways, for example, as 5976217636 + 115776187081 = 77306^2 + 340259^2 .

It is a cyclic number.

It is not a de Polignac number, because 121752404717 - 2⁴ = 121752404701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121752404797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16782863 + ... + 16790115.

It is an arithmetic number, because the mean of its divisors is an integer number (7737207075).

Almost surely, 2^121752404717 is an apocalyptic number.

It is an amenable number.

121752404717 is a deficient number, since it is larger than the sum of its proper divisors (2042908483).

121752404717 is a wasteful number, since it uses less digits than its factorization.

121752404717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8512.

The product of its (nonzero) digits is 109760, while the sum is 41.

The spelling of 121752404717 in words is "one hundred twenty-one billion, seven hundred fifty-two million, four hundred four thousand, seven hundred seventeen".